Up to date • Future-oriented • Zellentin

From the idea to the property right: We are at your side

With us your invention is in good hands.

Zellentin & Partner is a patent law firm established for more than 60 years with a technical focus in the field of chemistry and chemical engineering, combining tradition and progress convincingly and successfully. Its partners and the firm's team have the highest possible level of legal competence in all matters of intellectual property rights and related fields of law, such as the law on employees inventions or contract law. A special focus is the prosecution and enforcement of intellectual property rights in the successor states of the former Soviet Union.

We offer the best possible service with a high level of professional competence. Full transparency and cost control are a matter of course.

We personally take care of your intellectual property.

Your partners for patents, trademarks and designs.

Dr. Annekathrin Seifert

Our expertise

legal competence

  • patent law
  • utility model law
  • trademark law
  • design law
  • employee inventions law
  • contract law (licences, contracts of cooperation)
  • filing and enforcement of industrial property rights especially in the successor states of the former Soviet Union


technical competence:

  • polymer chemistry
  • formulations
  • organic synthesis
  • inorganic chemistry
  • organic electronics
  • batteries
  • cosmetics
  • detergents and aroma chemicals
  • crop protection
  • industrial organic chemistry
  • chemical engineering
  • cement and hydraulic binders

Office News

IP management standard DIN 77006

   |   news

The new German standard DIN 77006 published June 2020 defines what constitutes quality in IP management and how it can be assured by an adequate and …

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Order of Exploitation or Compulsory License for Vaccine Patents

   Created by Dr. Annekathrin Seifert and Dr. Jens Wortmann |    |   Publications

- High hurdles, questionable effect -

If one follows the current discussion on the supply of Covid-19 vaccine to the population, people in public life like politicians, television presenters and others, repeatedly express the view that patent law…

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Changes in Ukrainian Patent law and SPC practice

   |   news

The Ukrainian Patent law and SPC practice have been changed recently. These changes impact the strategy for inventions, patent applications and patents enormously, especially in the field of pharma and life science.

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